What causes the outward gas pressure that balances the inward pull of gravity in a main-sequence star?

a. the rapid outward flow of gas
b. the rapid inward flow of the gas
c. the high temperature of the gas
d. the high density of the gas
e. the high temperature and the high density of the gas


e

Physics & Space Science

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When an air mass passes from a maritime source region to a warmer continental region, heating from the warmer land causes

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